28163720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{1321}}^1$

素因数の和:1386

約数の個数: 64

約数和(自身を含む): 69960240

約数和(自身を除く): 41796520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 41, 52, 65, 82, 104, 130, 164, 205, 260, 328, 410, 520, 533, 820, 1066, 1321, 1640, 2132, 2642, 2665, 4264, 5284, 5330, 6605, 10568, 10660, 13210, 17173, 21320, 26420, 34346, 52840, 54161, 68692, 85865, 108322, 137384, 171730, 216644, 270805, 343460, 433288, 541610, 686920, 704093, 1083220, 1408186, 2166440, 2816372, 3520465, 5632744, 7040930, 14081860, 28163720]

約数ペア:

[(1, 28163720), (2, 14081860), (4, 7040930), (5, 5632744), (8, 3520465), (10, 2816372), (13, 2166440), (20, 1408186), (26, 1083220), (40, 704093), (41, 686920), (52, 541610), (65, 433288), (82, 343460), (104, 270805), (130, 216644), (164, 171730), (205, 137384), (260, 108322), (328, 85865), (410, 68692), (520, 54161), (533, 52840), (820, 34346), (1066, 26420), (1321, 21320), (1640, 17173), (2132, 13210), (2642, 10660), (2665, 10568), (4264, 6605), (5284, 5330)]